Legal claims defining the scope of protection, as filed with the USPTO.
1. An electro-luminescence panel including gate lines, data lines arranged in such a manner to cross the gate lines, and electro-luminescence cells provided at each crossing of the gate lines and the data lines, the panel comprising: a first electro-luminescence cell driving circuit arranged at a crossing of the first gate line and the data line to drive the electro-luminescence cells; and a second electro-luminescence cell driving circuit arranged at each crossing of the gate lines other than the first gate line and the data lines to drive the electro-luminescence cells, wherein the first electro-luminescence cell driving circuit includes a power supply for supplying power to the electro-luminescence cells, a first PMOS thin film transistor connected between the power supply and the data line, a second PMOS thin film transistor connected between the power supply and the electro-luminescence cell, a third PMOS thin film transistor connected between the gate electrodes of the first and second PMOS thin film transistors to serve as a switch and a capacitor connected between the gate electrode of the second PMOS thin film transistor and the power supply.
2. The electro-luminescence panel according to claim 1 , wherein current flowing at the second PMOS thin film transistor is controlled by a ratio of width to length of each of the first PMOS transistor and the second PMOS thin film transistor.
3. An electro-luminescence panel, comprising: a first electro-luminescence cell driving circuit arranged at a crossing of a first gate line and a data line to drive electro-luminescence cells; and a second electro-luminescence cell driving circuit arranged at each crossing of the gate lines other than the first gate line and the data lines to drive the electro-luminescence cells, wherein the second electro-luminescence cell driving circuit includes a power supply for supplying power to the electro-luminescence cells, a fourth PMOS thin film transistor connected between the power supply and the electro-luminescence cell, a fifth PMOS thin film transistor connected between the data line and the gate electrode of the fourth PMOS thin film transistor to serve as a switch and a capacitor connected between the gate electrode of the fourth PMOS thin film transistor and the power supply.
4. An electro-luminescence panel including gate lines, data lines arranged in such a manner to cross the gate lines, and electro-luminescence cells provided at each crossing of the gate lines and the data lines, the panel comprising: a first electro-luminescence cell driving circuit arranged at a crossing of the first gate line and the data line to drive the electro-luminescence cells; and a second electro-luminescence cell driving circuit arranged at each crossing of the gate lines other than the first gate line and the data lines to drive the electro-luminescence cells, wherein the second electro-luminescence cell driving circuit includes a power supply for supplying power to the electro-luminescence cells, a fourth PMOS thin film transistor connected between the power supply and the electro-luminescence cell, a fifth PMOS thin film transistor connected between the data line and the gate electrode of the fourth PMOS thin film transistor to serve as a switch and a capacitor connected between the gate electrode of the fourth PMOS thin film transistor and the power supply.
5. The electro-luminescence panel according to claim 4 , wherein current flowing at the fourth PMOS thin film transistor is controlled by a ratio of width to length of each of the first PMOS transistor and the fourth PMOS thin film transistor.
6. An electro-luminescence panel comprising: a first electro-luminescence cell driving circuit arranged at a crossing of a first gate line and a data line to drive electro-luminescence cells; and a second electro-luminescence cell driving circuit arranged at each crossing of the gate lines other than the first gate line and the data lines to drive the electro-luminescence cells, wherein the first electro-luminescence cell driving circuit includes a power supply for supplying power to the electro-luminescence cells, a first PMOS thin film transistor connected between the power supply and the data line, a second PMOS thin film transistor connected between the power supply and the electro-luminescence cell, a third PMOS thin film transistor connected between the gate electrodes of the first and second PMOS thin film transistors to serve as a switch and a capacitor connected between the gate electrode of the second PMOS thin film transistor and the power supply.
7. A method of manufacturing an electro-luminescence panel including gate lines, data lines arranged in such a manner to cross the gate lines, and electro-luminescence cells provided at each crossing of the gate lines and the data lines, the method comprising: forming a first electro-luminescence cell driving circuit arranged at a crossing of the first gate line and the data line to drive the electro-luminescence cells; and forming a second electro-luminescence cell driving circuit arranged at each crossing of the gate lines other than the first gate line and the data lines to drive the electro-luminescence cells, wherein forming the first electro-luminescence cell driving circuit includes forming a power supply for supplying power to the electro-luminescence cells, forming a first PMOS thin film transistor connected between the power supply and the data line, forming a second PMOS thin film transistor connected between the power supply and the electro-luminescence cell, forming a third PMOS thin film transistor connected between the gate electrodes of the first and second PMOS thin film transistors to serve as a switch and forming a capacitor connected between the gate electrode of the second PMOS thin film transistor and the power supply.
8. The method according to claim 7 , wherein current flowing at the second PMOS thin film transistor is controlled by a ratio of width to length of each of the first PMOS transistor and the second PMOS thin film transistor.
9. An electro-luminescence panel comprising: gate lines and data lines arranged on a glass substrate to cross each other; and first and second pixel elements and arranged at each crossing of the gate lines and the data lines, wherein each of the first and second pixel elements is driven when gate signals at the gate lines are enabled, to thereby generate light corresponding to the magnitudes of pixel signals at the data lines, wherein a gate driver is connected to the gate lines while a data driver is connected to the data lines, the gate driver for driving the gate lines sequentially and the data driver for applying pixel signals to the first and second pixel elements via the data lines, and wherein each of the first and second pixel elements driven with the gate driver and the data driver includes a first electro-luminescence cell driving circuit arranged at a crossing of a first gate line and a data line to drive the electro-luminescence panel and a second electro-luminescence cell driving circuit arranged at each crossing of the gate lines other than the first gate line and the data line to drive the electro-luminescence panel, and wherein the first electro-luminescence cell driving circuit includes an organic light emitting diode connected to a ground voltage line and a compensation circuit having at least three thin film transistors arranged at each crossing of the first gate line and the data lines.
10. The electro-luminescence panel of claim 9 , wherein the first electro-luminescence cell driving circuit applies a forward current signal varying a backward current amount at the data line to the organic light emitting diode in a time interval when a gate signal at the gate line is enabled.
11. The electro-luminescence panel of claim 9 , wherein the organic light emitting diode emits light corresponding to an amount of current applied from the compensation circuit.
12. The electro-luminescence panel of claim 11 , wherein the compensation circuit includes: first and second PMOS thin film transistors connected to form a current mirror at a voltage supply line; a third PMOS thin film transistor connected between the gate electrodes of the first and second PMOS thin film transistors, and a first capacitor connected between the second PMOS thin film transistor and the voltage supply line.
13. The electro-luminescence panel of claim 12 , wherein the third PMOS thin film transistor serves as a switch for the first and second PMOS thin film transistors.
14. The electro-luminescence panel of claim 13 , wherein when the third PMOS thin film transistor is turned on, the first and second PMOS thin film transistors become a current mirror, wherein a current with a constant magnitude flows at the first data line through the first PMOS thin film transistor and a current being equal to an amount of the current flowing at the first data line is applied to the organic light emitting diode through the second PMOS thin film transistor.
15. The electro-luminescence panel of claim 14 , wherein the current applied to the organic light emitting diode is fed during a holding time resulting from the first capacitor.
16. The electro-luminescence panel of claim 14 , wherein the current flowing at the first data line and the current applied to the organic light emitting diode are determined by a ratio of width to length of each of the first PMOS thin film transistor and the second PMOS thin film transistor.
17. The electro-luminescence panel of claim 14 , wherein the first PMOS thin film transistor and the second PMOS thin film transistor control current flowing at the second PMOS thin film transistor without being influenced by a threshold voltage.
18. The electro-luminescence panel of claim 12 , wherein the first capacitor charges a current signal at the data line when the voltage supply line is connected to the data line and applies the charged current signal to the gate electrode of the second PMOS thin film transistor.
19. The electro-luminescence panel of claim 12 , wherein the second PMOS thin film transistor is turned on by the current signal having been charged in the first capacitor to apply a supply voltage at the voltage supply line to the organic light emitting diode.
20. An electro-luminescence panel, comprising: gate lines and data lines arranged on a glass substrate to cross each other; first and second pixel elements and arranged at each crossing of the gate lines and the data lines, wherein each of the first and second pixel elements is driven when gate signals at the gate lines are enabled, to thereby generate light corresponding to the magnitudes of pixel signals at the data lines, wherein a gate driver is connected to the gate lines while a data driver is connected to the data lines, the gate driver for driving the gate lines sequentially and the data driver for applying pixel signals to the first and second pixel elements via the data lines, and wherein each of the first and second pixel elements driven with the gate driver and the data driver includes a first electro-luminescence cell driving circuit arranged at a crossing of a first gate line and a data line to drive the electro-luminescence panel and a second electro-luminescence cell driving circuit arranged at each crossing of the gate lines other than the first gate line and the data line to drive the electro-luminescence panel, and wherein the second electro-luminescence cell driving circuit includes an electro-luminescence cell organic light emitting diode connected to a ground voltage line and a cell driving circuit having two thin film transistors arranged at each crossing of the gate lines other than the first gate line and the data lines, the organic light emitting diode emits light corresponding to an amount of current applied from the cell driving circuit.
21. The electro-luminescence panel of claim 20 , wherein the cell driving circuit applies a forward current signal varying depending on a backward current amount at the data line when a gate signal at the gate line is enabled to the organic light emitting diode.
22. The electro-luminescence panel of claim 21 , the current flowing at the first data line and the current applied to the organic light emitting diode are determined by a ratio of width to length of each of the first PMOS thin film transistor and the fourth PMOS thin film transistor.
23. The electro-luminescence panel of claim 22 , wherein the first PMOS thin film transistor and the fourth PMOS thin film transistor control current flowing at the fourth PMOS thin film transistor without being influenced by a threshold voltage.
24. The electro-luminescence panel of claim 20 , wherein the cell driving circuit includes: a fourth PMOS thin film transistor connected between the organic light emitting diode and the voltage supply line; a fifth PMOS thin film transistor connected between the gate electrode of the fourth PMOS thin film transistor and the data lines to serve as a switch; and a second capacitor connected between the gate electrode of the fourth PMOS thin film transistor and the voltage supply line.
25. The electro-luminescence panel of claim 24 , wherein the second capacitor charges a current signal at the data line when the voltage supply line is connected to the data line and applies the charged current signal to the gate electrode of the fourth PMOS thin film transistor.
26. The electro-luminescence panel of claim 25 , wherein the fourth PMOS thin film transistor is turned on by the current signal having been charged in the second capacitor to apply a supply voltage at the voltage supply line to the organic light emitting diode.
27. The electro-luminescence panel of claim 24 , wherein the fifth PMOS thin film transistor serves as a switch for the fourth PMOS thin film transistor.
28. The electro-luminescence panel of claim 27 , wherein when the fifth PMOS thin film transistor is turned on, the fourth PMOS thin film transistor forms a current mirror along with the first PMOS thin film transistor of the first electro-luminescence cell driving circuit.
29. The electro-luminescence panel of claim 28 , wherein the first PMOS thin film transistor is turned on to allow current with a constant magnitude to flow at the first data line through the first PMOS thin film transistor, so that a current being equal to an amount of the current flowing at the first data line is applied to the organic light emitting diode through the fourth PMOS thin film transistor.
30. The electro-luminescence panel of claim 29 , wherein the current applied to the organic light emitting diode is fed during a holding time resulting from the second capacitor.
31. A method of manufacturing an electro-luminescence panel including gate lines, data lines arranged in such a manner to cross the gate lines, and electro-luminescence cells provided at each crossing of the gate lines and the data lines, the method comprising: forming a first electro-luminescence cell driving circuit arranged at a crossing of the first gate line and the data line to drive the electro-luminescence cells; and forming a second electro-luminescence cell driving circuit arranged at each crossing of the gate lines other than the first gate line and the data lines to drive the electro-luminescence cells, wherein forming the second electro-luminescence cell driving circuit includes forming a power supply for supplying power to the electro-luminescence cells, forming a fourth PMOS thin film transistor connected between the power supply and the electro-luminescence cell, forming a fifth PMOS thin film transistor connected between the data line and the gate electrode of the fourth PMOS thin film transistor to serve as a switch and forming a capacitor connected between the gate electrode of the fourth PMOS thin film transistor and the power supply.
32. The method according to claim 31 , wherein current flowing at the fourth PMOS thin film transistor is controlled by a ratio of width to length of each of the first PMOS transistor and the fourth PMOS thin film transistor.
33. An electro-luminescence panel, comprising: a first electro-luminescence cell driving circuit arranged at a crossing of a first gate line and a first data line to drive the first electro-luminescence cell; and a second electro-luminescence cell driving circuit arranged at a crossing of a second gate line and a second data line to drive the second electro-luminescence cell, wherein the first electro-luminescence cell driving circuit includes a compensation circuit utilizing a current mirror.
34. An electro-luminescence panel according to claim 33 , wherein the first data line and the second data line are the same data line.
35. An electro-luminescence panel according to claim 33 , wherein the first gate line is a gate line at an outermost edge of the panel.
36. An electro-luminescence panel according to claim 33 , wherein the first electro-luminescence cell driving circuit includes first, second and third thin film transistors and the second electro-luminescence cell driving circuit includes first and second thin film transistors.
37. An electro-luminescence panel comprising: a first electro-luminescence cell driving circuit arranged at a crossing of a first gate line and a first data line to drive a first electro-luminescence cell; and a second electro-luminescence cell driving circuit arranged at a crossing of a second gate line and a second data line to drive a second electro-luminescence cell, wherein the second electro-luminescence cell driving circuit is coupled to the first electro-luminescence cell driving circuit to drive the second electro-luminescence cell.
38. An electro-luminescence panel according to claim 37 , further comprising N electro-luminescence cell driving circuits coupled to the first electro-luminescence cell driving circuit to drive N electro-luminescence cells, wherein N is an integer of 1 or higher.
39. An electro-luminescence panel comprising: a first electro-luminescence cell driving circuit arranged at a crossing of a first gate line and a first data line to drive a first electro-luminescence cell; and a second electro-luminescence cell driving circuit arranged at a crossing of a second gate line and a second data line to drive a second electro-luminescence cell, wherein the first electro-luminescence cell driving circuit includes a first thin film transistor and the second electro-luminescence cell driving circuit includes a second thin film transistor, and wherein the first thin film transistor forms a current mirror along with the second thin film transistor during an operation of the second electro-luminescence cell.
40. An electro-luminescence panel according to claim 39 , wherein the first data line and the second data line are the same data line.
41. An electro-luminescence panel according to claim 39 , wherein the first gate line is a gate line at an outermost edge of the panel.
42. An electro-luminescence panel according to claim 39 , wherein the first electro-luminescence cell driving circuit includes three thin film transistors and the second electro-luminescence cell driving circuit includes two thin film transistors.
Unknown
February 17, 2004
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